iOS 8

The big reveal this year is expected to be iOS 8. Given the huge overhaul to iOS 7 last year, we don't expect to see any drastic changes to iOS 8, in terms of its design at least.

The biggest addition is expected to be Apple's new Healthbook app. Leaked numerous times, it's likely to support everything from step-tracking and calorie intake, to more advanced stats like blood pressure and hydration levels.

Leaked shots of the Healthbook app show off a Passbook-like card interface, and we could very well see some new third-party accessories for measuring more complex attributes like blood pressure.

A few other apps are also expected to debut in iOS 8. Leaked icons point to TextEdit, Preview and Tips too. Although the icons look far from finished, there's been more than enough time since they leaked for Apple to polish them off.

In addition to new apps, iOS 8 could bring splitscreen multitasking to the iPad, letting users run two apps side-by-side for slicker multitasking.

Lastly, the Music player could be updated to support 192KHz (and probably 24-bit) audio, in preparation for the next generation of iPhones and iPads which are expected to support high resolution audio files.

New iMacs

In addition to a new MacBook Air, we could also see Apple lift the curtain off a range of shiny new iMacs.

These new rumours come courtesy of code spotted in the latest OS X Mavericks 10.9 beta, which mentions iMac15,1, and iMac15,n models.

Previous iMac models have gone by the code names 14,1 and 14,2 - representing the 21.5in and 27in models. We expect them to launch with OS x 10.10 already loaded up and ready to roll, along with an internal hardware refresh.